Process of producing colorations on fiber.



35o Drawing.

(333 L'ZETDMGSHAFENQN-THE-RHINE, GERMANY, ASSIGHQR TO id; 6s Sid/DA FABRIK, 0F LUDVVIGEHAFEN-DlLTHE-HHINE,

FlltGCESf: 35 PIRQDUGENG C(BLOMTIGNS 0N FIBER.

{2' 0 aZZ whom it may 007166.?75: a Be it known that I, Fmrz Gfin'rrma, citizen of the German. Empire, residing at Ludwigshafen-on-the-Rhine, Germany, have invented new and useful improvements in Processes of Producing Colorations on Fiber, of which thefollowing is a specification.

l have found that valuable shades can be obtained on fiber by applying the condensation product of acetone with L8-naphtha1enedianiin-l-sulionic acid to the said fiber and then developing with an unsulfonated diazo compound. The shades obtained are characterized. by their great fastness and by their capability of being discharged. If desired, the said acetone compound can be printed on material which. has already been prepared with beta-naphthol, or with any other substance or substances suitable for padding and developing, whereupon, on del .l 'oping with a diazo compound, colored .terns can be obtained. The acetone coinacid can be obtained as described in the specification of German Patent No. 122,475.

The following example Wlll serve to Illustrate further the nature of this invention,

which, however, is not confined to this example. The parts are by weight.

Mix parts of the acetone condensation z: not of 1.8maphthalene-diaminr hsulfonic acid with water, add 15 parts of caustic solution and parts of Turkey red oil, and make up the whole with water to 1,0!)6 parts. Pad the material with the solution thus obtained, dry the material and then develop it with a diazo solution obtained from 23 parts of para-nitranilin per 1,000, which has been treated of sodium acetate to remove Allow to stand for several hours, then wash and soap. In this way a pure blue-blaclt Specification of Letters Patent.

. pound.

p und of l.8-naphthalenediamin-d-sulfonic with an excess mineral acid.

Patented Mai. 211,1'55115.

hpplzlcatich filed September 5, 1913. Serial No. 788,272.

compounds from para-chlor-ortho-anisidin and alpha-naphthylanlin, whereby claret shades are obtained.

Now what I claim is l. The process of producing colorations on fiber which consists in applying the condensation product of acetone. with 1.8- naphthalene-diamin-d-sulfonic acid to the fiber and then developing with a diazo com- 2. The process of producing colorations on'fiber which consists in applying the condensation product of acetone with 1.8- naphthalenediamin-el-suli'onic acid and other substance suitable for padding and developing to the fiber and then developing with a diazo compound.

3. The process of producing colorations n fiber which consists in applying thecondensation product of acetone with 1.8- naphthalene diamin 4 sulfonic acid and beta-naphthol to the fiber and then developing with a diazo compound.

' 4. The process of producing colorations on fiber which consists in applying the condensation product of acetone with 1.8- naphthalene-diamin-4-sultonic acid to the fiber and then developing with diazo paranitranilin.

in testimony whereof I have hereunto set JosnPH PFEIFFEil, J. Auto LLOYD. 

